Besides EAR and EJB, what do I get from a Java EE app server that I don't get in a servlet container like Tomcat?

Question

We use Tomcat to host our WAR based applications. We are servlet container compliant J2EE applications with the exception of org.apache.catalina.authenticator.SingleSignOn.

Answer 1

If you are being asked to move to a commercial J2EE server, the reasons may have nothing to do with the J2EE stack but with non-technical considerations.

One thing that you do get with a commercial J2EE offering that you don't get with Tomcat is technical support.

This may not be a consideration for you, depending on the service levels your web applications are supposed to meet. Can your applications be down while you try and figure out a problem with Tomcat, or will that be a major problem?